If elected president, Hillary Clinton promises to tell the truth about the government’s secret work with space aliens — as if she’s capable of speaking the truth about anything.

Would Clinton investigate UFOs and Area 51 (the top-secret Air Force base in Nevada that fervid rumors call the home of the feds’ supposed alien investigations)? The question came in an interview with The Conway (NH) Daily Sun.

Her answer: “Yes, I’m going to get to the bottom of it. I think we may already have been [visited by aliens]. We don’t know for sure.”

Let’s wind that back. First instinct: Pander to the questioner. Second: Cover yourself with all the folks who know better. Third: Fudge to avoid getting pinned down by either side.

Not much different from her response on real issues — like her we’ll-get-to-the-bottom-of-Benghazi promise. (At least she didn’t try to blame an Internet video for flying saucers . . .)

On top of that, Clinton hinted she might create a presidential task force to investigate Area 51.

This turns out to be a running thing for the Clintons. According to old-time Clintonite Webb Hubbell, Bill gave him a mission back in the ’90s, as Hubbell was becoming a top Justice Department official: “I want you to find the answers to two questions for me. One, who killed JFK? And two, are there UFOs?”

As The Post’s late, great Washington Bureau chief, Deborah Orin, later noted, “Hubbell describes his failure to find out about JFK and UFOs as a big regret when he had to resign” to plead guilty to bilking law clients back in Arkansas.

And Bill is still UFO-obsessed. Talking to Jimmy Kimmel last year, he said that meeting aliens “may be the only way to unite us in this incredibly divided world of ours. If they’re out there, we better think of how all the differences among people on Earth would seem small if we felt threatened by a space invader.”

Of course, he also probably figures they’d be willing to give big to the Clinton Foundation in exchange for having a few doors opened in DC.

Even the advent of extraterrestrials wouldn’t prompt the Clintons to change their ways.